Abstracts
INFLUENCE OF SUPPLEMENTAL DIETS ON THE CHRYSOPIDS ON APPLE TREES AT GIZA GOVERNORATE) (CHRYSOPIDAE-NEUROPTERA) |
A.M.A. IBRAHIM; K.T. AWADALLAH and MOUNIR D. ABDAILAH Biological Control Laboratory, Faculty of Agriculture, Cairo University . |
ABSTRACT Chrysopids, especially Chrysoperla carnea Stephens, are efficient predators against different aphid species. Their effectiveness could be increased by providing supplementary diets. Three diets were used; i.e. yeast + Sugar + water, molasses and sucrose solutions. The former diet showed the best results; either in increasing chrysopids eggs and subsequently decreasing aphids counts or in its long lasting effect. The effect of molasses and sugar solutions ranked second and third category; with insignificant variations. It is recommended to use yeast + sugar-i- water, as a stimulant for C. carnea. |
Key Words: Biological, Predators, Chrysopids species. |